Wind Injury -
Failure can occur when there is no wind. The splinters will point
downward when this type of failure occurs. When high winds lead to the
fracture of the branch, the splinters will usually point upward. Branches
that fail during high winds usually crack as the branch bends upward.
Branches are not well constructed for upward pressures. Also, do not
confuse branch cracking with branch pullout from the trunk.